diff --git a/requirements-dev.txt b/requirements-dev.txt
index eb965cb..9b58e6f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,7 +3,7 @@ flake8==3.3.0
 pytest==3.0.7
 pytest-cov==2.4.0
 coverage==4.3.4
-sphinx==1.5.5
+sphinx==1.5.6
 pep257==0.7.0
 aiohttp-session==0.8.0
 aiopg[sa]==0.13.0